packages/Python/lldbsuite/test/functionalities/recursion/TestValueObjectRecursion.py

   1 """
   2 Test lldb data formatter subsystem.
   3 """
   4
   5 from __future__ import print_function
   6
   7
   8 import os
   9 import time
  10 import lldb
  11 from lldbsuite.test.lldbtest import *
  12 import lldbsuite.test.lldbutil as lldbutil
  13
  14
  15 class ValueObjectRecursionTestCase(TestBase):
  16
  17     mydir = TestBase.compute_mydir(__file__)
  18
  19     def setUp(self):
  20         # Call super's setUp().
  21         TestBase.setUp(self)
  22         # Find the line number to break at.
  23         self.line = line_number('main.cpp', '// Set break point at this line.')
  24
  25     def test_with_run_command(self):
  26         """Test that deeply nested ValueObjects still work."""
  27         self.build()
  28         self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
  29
  30         lldbutil.run_break_set_by_file_and_line(
  31             self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
  32
  33         self.runCmd("run", RUN_SUCCEEDED)
  34
  35         # The stop reason of the thread should be breakpoint.
  36         self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
  37                     substrs=['stopped',
  38                              'stop reason = breakpoint'])
  39
  40         # This is the function to remove the custom formats in order to have a
  41         # clean slate for the next test case.
  42         def cleanup():
  43             self.runCmd('type format clear', check=False)
  44             self.runCmd('type summary clear', check=False)
  45
  46         # Execute the cleanup function during test case tear down.
  47         self.addTearDownHook(cleanup)
  48
  49         root = self.frame().FindVariable("root")
  50         child = root.GetChildAtIndex(1)
  51         if self.TraceOn():
  52             print(root)
  53             print(child)
  54         for i in range(0, 15000):
  55             child = child.GetChildAtIndex(1)
  56         if self.TraceOn():
  57             print(child)
  58         self.assertTrue(
  59             child.IsValid(),
  60             "could not retrieve the deep ValueObject")
  61         self.assertTrue(
  62             child.GetChildAtIndex(0).IsValid(),
  63             "the deep ValueObject has no value")
  64         self.assertTrue(
  65             child.GetChildAtIndex(0).GetValueAsUnsigned() != 0,
  66             "the deep ValueObject has a zero value")
  67         self.assertTrue(
  68             child.GetChildAtIndex(1).GetValueAsUnsigned() != 0,
  69             "the deep ValueObject has no next")